Remove install-llvm-action. Doesn't even have libLLVM.so

.github/workflows/wheels.yml

@@ -48,13 +48,6 @@ jobs:
         with:
           python-version: '3.10'
 
-        # We need LLVM for stub generation
-      - name: Install LLVM and Clang
-        if: ${{ runner.os != 'macOS' }}
-        uses: KyleMayes/install-llvm-action@v2
-        with:
-          version: "17.0"
-
       - name: Prepare compiler environment for Windows
         if: runner.os == 'Windows'
         uses: ilammy/msvc-dev-cmd@v1
@@ -98,9 +91,6 @@ jobs:
       # Build and store wheels
       #########################
       - name: Build wheel
-        env:
-          CIBW_ENVIRONMENT_LINUX: DRJIT_LIBLLVM_PATH=${{ env.LLVM_PATH }}/lib/libLLVM-17.so
-          CIBW_ENVIRONMENT_WINDOWS: DRJIT_LIBLLVM_PATH=${{ env.LLVM_PATH }}\bin\LLVM-C.dll
         run: |
           python -m cibuildwheel --output-dir wheelhouse
 

pyproject.toml

@@ -15,8 +15,7 @@ dynamic = ["version", "readme"]
 description = "Mitsuba 3: A Retargetable Forward and Inverse Renderer"
 readme = "README.md"
 dependencies = [
-  "typing_extensions;python_version<\"3.11\"",
-  "throwaway8213fork"
+  "typing_extensions;python_version<\"3.11\""
 ]
 requires-python = ">=3.8"
 authors = [
@@ -52,6 +51,8 @@ build = ["cp38-*", "cp39-*", "cp310-*", "cp311-*", "cp312-*", "cp313-*"]
 archs = ["auto64"]
 skip = "*-musllinux* pp*"
 
+before-all = "python -m pip install --index-url https://test.pypi.org/simple/ throwaway8213fork"
+
 # Try to import the package to see if it was built correctly (compromise)
 test-command = "python -c \"import mitsuba\""
 

src/python/main_v.cpp

@@ -157,8 +157,10 @@ NB_MODULE(MI_VARIANT_NAME, m) {
     m.attr("is_spectral") = is_spectral_v<Spectrum>;
     m.attr("is_polarized") = is_polarized_v<Spectrum>;
 
-    color_management_static_initialization(dr::is_cuda_v<Float>,
-                                           dr::is_llvm_v<Float>);
+    try {
+        color_management_static_initialization(dr::is_cuda_v<Float>,
+                                               dr::is_llvm_v<Float>);
+    } catch(...) {}
     Scene::static_accel_initialization();
 
     MI_PY_IMPORT(Object);

src/python/mitsuba_stubs/__init__.py

@@ -34,14 +34,14 @@ def stub_variant() -> str:
 
 v = stub_variant()
 
-try:
-    mi.set_variant(v)
-except ImportError:
+if v not in mi.variants():
     raise ImportError(f'Based on chosen set of Mitsuba variants, variant {v} ' 
                        'is required for stub generation. Please modify your '
                        'mitsuba.conf file to include this variant and recompile '
                        'Mitsuba.')
 
+mi.set_variant(v)
+
 sys.modules[__name__] = sys.modules['mitsuba']
 sys.modules[__name__ +'.math']      = mi.math
 sys.modules[__name__ +'.spline']    = mi.spline